In a no-holds-barred fight, they have a HUGE bullseye painted on them, and will be easy to take out.
Easy being a relative term.
Keep in mind that in World War II, the Japanese had lots of bases on little tiny islands. And it took hundreds of thousands of Marines to take them away.
The only reason this was done was because carrier aircraft of the era didn't pack anywhere the same punch as land based aircraft. Land based aircraft didn't have the range to hit Japan from areas under US control and return to base. In-flight refueling was still very experimental. Island hopping is no longer necessary. These rocks are small enough to completely obliterate in an afternoon by air anyway. Anybody left is not going to be in a position to threaten high-flying aircraft or ships.